Traxxas Motor Gear Cover Access 550 Motor Hinge Post TRX7379R

Overview

The Traxxas Cover gear and motor plate access cover with motor mount hinge post (model TRX7379R) is an essential replacement part for RC enthusiasts maintaining their Traxxas models equipped with 550 motors. This genuine Traxxas component provides secure access to critical drivetrain components whilst keeping dirt, debris and damage away from your precision-engineered motor and gearing systems. Whether you're a dedicated RC car UK hobbyist performing routine maintenance, upgrading your brushless RC setup, or replacing worn components after intense off-road bashing, this cover ensures your motor assembly remains protected and properly aligned during operation.

As an authorised Traxxas retailer, RC Model Shop stocks only genuine factory components that meet Traxxas engineering specifications. This gear cover is precision-engineered to fit perfectly with the motor mount hinge post assembly, maintaining exact tolerances for optimal gear mesh and motor performance. The included fastening hardware — comprising 3x10mm cap head screws with split and flat washers, 2.5x4mm cap head screws, and 3x8mm button cap head screws — ensures secure, vibration-resistant assembly that withstands the demands of high-performance RC driving whether you're racing on circuit tracks or bashing across rough terrain.

Proper maintenance and replacement of wear items like this motor cover is crucial for extending the lifespan of your RC car. By keeping your motor and gearing system protected with an authentic Traxxas cover, you'll maintain consistent performance, preserve gear mesh accuracy, and avoid costly damage to internal components. This is the perfect upgrade or replacement part for anyone running a Traxxas model with 550 motors in the UK and beyond.

Key Features

• Genuine Traxxas OEM Component — This is an authentic factory-manufactured part designed and engineered by Traxxas to exact specifications, ensuring perfect fit and compatibility with your specific vehicle platform.
• Motor Mount Hinge Post Integration — The cover features a precisely designed hinge post mechanism that allows easy access to internal drivetrain components whilst maintaining structural integrity and alignment during operation.
• Complete Fastening Hardware Included — The package includes all necessary screws and washers required for installation: one 3x10mm cap head screw with split and flat washers for primary securing, two 2.5x4mm cap screws for supplementary mounting, and one 3x8mm button cap head screw for the hinge post assembly.
• Optimised for 550 Motor Systems — This cover is specifically engineered for Traxxas models running 550-size electric motors, providing perfect clearances and access points designed for this motor configuration.
• Durable Construction — The cover is manufactured from tough plastic materials that withstand the vibration, impact and thermal stress of high-performance RC operation whilst remaining lightweight for optimal vehicle dynamics.
• Access to Spur Gear and Slipper Clutch — The removable design allows you to easily access and service critical components including the spur gear, slipper clutch assembly, friction pegs, pressure plates and slipper rings without full drivetrain disassembly.
• Precision Engineering — Every tolerence is carefully controlled to maintain exact gear mesh settings and prevent unwanted play in the motor mounting system, which is essential for consistent acceleration and power delivery.

Technical Performance

This Traxxas gear and motor plate access cover represents precision engineering designed to protect and provide easy servicing access to your 550 motor system. The cover works in conjunction with the motor plate to create a sealed environment that shields internal drivetrain components from mud, dust, water and debris that can compromise performance during outdoor RC bashing. The hinge post mechanism is engineered to provide quick, tool-free access to the spur gear, slipper clutch and associated friction pegs without removing the motor from its mounting cradle — a significant time-saver during maintenance sessions at the RC track or bashing ground. The included fastening hardware is specifically rated for the vibration loads experienced in RC vehicles; the 3x10mm cap head screws with split and flat washers provide primary retention with the split washers preventing loosening due to vibration, whilst the 2.5x4mm and 3x8mm button cap head screws secure the hinge post assembly with appropriate clamping force. The split washers are particularly important as they maintain tension despite the constant vibration and micro-movements inherent to electric RC vehicles, preventing the cover from gradually loosening over multiple run sessions. The cover's design allows precise adjustment of gear mesh by loosening the motor retention screws slightly — positioning the gears as close together as possible without binding whilst maintaining a slight amount of play (lash) between the pinion gears and spur gear, which is critical for smooth power delivery and longevity. Whether you're running a 550 motor in a Traxxas E-Maxx or similar platform, this cover is engineered to deliver the access and protection your drivetrain deserves.

What's in the Box

• Traxxas gear and motor plate access cover with motor mount hinge post assembly
• One 3x10mm cap head machine screw with split washer
• One 3x10mm cap head machine screw with flat washer
• Two 2.5x4mm cap head screws
• One 3x8mm button cap head screw

Frequently Asked Questions

• What models does the Traxxas TRX7379R gear cover fit? — This cover is specifically designed for Traxxas models equipped with 550-size electric motors. The part number TRX7379R identifies this as a genuine OEM component engineered for exact fitment with compatible 550 motor Traxxas platforms. Check your vehicle manual or contact an RC specialist to confirm compatibility with your specific model.
• How often should I service my gear cover and motor plate assembly? — It's recommended to inspect your gear cover and motor mount every 5-10 running hours, depending on conditions. If you're bashing in muddy, wet conditions or racing frequently, more regular inspection is advisable. Use this service interval to check for loose fasteners, inspect the spur gear for wear, and clean out any debris that may have entered the motor compartment.
• What is the purpose of the split washers included with this cover? — Split washers (also called lock washers) are designed to maintain tension on fasteners by applying constant spring force. In RC vehicles where vibration is constant, split washers prevent screws from gradually loosening during operation, which is critical for keeping the motor cover securely mounted and maintaining precise gear mesh alignment.
• Can I use this cover on other Traxxas vehicles? — This is specifically engineered for 550 motor applications. Other Traxxas models may use different motor covers with varying mounting configurations and fastener sizes. Always verify part compatibility before purchasing — using incorrect covers may result in poor fitment, inadequate protection, or inability to properly adjust gear mesh.
• What should I check when removing this cover for maintenance? — When you remove the gear cover following the Traxxas replacement instructions, inspect the spur gear for wear and damage to the teeth, check the slipper clutch friction pegs for excessive wear, verify that both slipper rings are in good condition and properly keyed into the pressure plate, and ensure the metal spur gear bushing remains on the slipper shaft. Replace any worn components and apply a small drop of CA (cyanoacrylate) glue to keep the slipper ring attached to the pressure plate during reassembly.
• Why is proper gear mesh adjustment important? — Correct gear mesh is absolutely critical for RC performance. If gears are too loose, you'll experience poor acceleration response and power delivery. If they're too tight, friction will increase, creating heat, reducing efficiency, and potentially causing premature wear or damage to teeth. The ideal setting is with gears positioned as close together as possible without binding, with just a slight amount of play (lash) between the pinion and spur gear. This cover's hinge design allows easy access to make these critical adjustments by loosening the motor screws slightly.
• Is this suitable for beginners? — Yes, this replacement part is suitable for RC enthusiasts at all levels. Beginners should familiarise themselves with the Traxxas replacement instructions (included with many Traxxas vehicles) before attempting to remove and reinstall the motor cover. The included fasteners and straightforward hinge design make this part relatively easy to work with once you understand the basic maintenance procedure.
• What is the difference between cap head screws and button cap head screws? — Cap head screws (also called socket head cap screws) have a larger cylindrical head with a hex socket, providing excellent grip and clamping force. Button cap head screws are smaller with a more rounded, button-like profile, used where space is limited or where a lower profile is needed. This cover uses both types depending on the specific function of each fastener location.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the Traxxas Cover, gear / motor plate access cover / motor mount hinge post / 3x10mm CS with split and flat washers (1pc) / 2.5x4mm CS (2 pcs) / 3x8mm BCS (1pc) (for 550 motors) TRX7379R today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.